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Run: 2026-07-09-01KX40VJKHC8WJAPTRX6ZDHGTX
Run Details
Model:
GPT-5.6 Terra (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
5.8s
Cost:
$0.010153
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Rain hammered the manor windows as guests gathered for dinner. At midnight, Lady Vale's scream shattered the polished silver silence. Everyone froze beside candlelit portraits, listening for another dreadful sound. Then the lights failed, swallowing faces, corridors, and whispered accusations. When darkness lifted, Doctor Renn lay dead beneath the staircase. His amber pocket watch ticked near his polished black shoe. No one admitted moving, though every guest watched someone closely. Inspector Marlow arrived smiling, carrying an umbrella and empty notebook. He studied the corpse, then noticed mud upon Renn's cuff. Outside, rain continued, yet the garden paths remained perfectly dry. Marlow closed his notebook, suddenly certain the murderer remained inside.
created_at
"2026-07-09T18:04:51.194Z"
7/9/2026, 6:04:51 PM
model
"openai/gpt-5.6-terra-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4919
moderation_latency
(null)
generation_time
5305
tokens_prompt
46
tokens_completion
204
native_tokens_prompt
41
native_tokens_completion
670
native_tokens_completion_images
0
native_tokens_reasoning
515
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"completed"
service_tier
"default"
usage
0.0101525
router
(null)
provider_responses
0
endpoint_id
"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id
"resp_0ad4311fbefb4448016a4fe2c34bf88194a8f0fde4a84c80c2"
is_byok
false
latency
241
model_permaslug
"openai/gpt-5.6-terra-20260709"
provider_name
"OpenAI"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer
(null)
request_id
"req-1783620291-kNXDOmBoFfAeP7QmwDFc"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783620291-LoGd2BKg3YZJpavrlT6i"
upstream_id
"resp_0ad4311fbefb4448016a4fe2c34bf88194a8f0fde4a84c80c2"
total_cost
0.0101525
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
response_cache_source_id
(null)
data_region
"global"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
11
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
10
10